685245224347 has 4 divisors (see below), whose sum is σ = 685257280776. Its totient is φ = 685233167920.

The previous prime is 685245224341. The next prime is 685245224431. The reversal of 685245224347 is 743422542586.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-685245224347 is a prime.

It is a super-3 number, since 3×685245224347³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 685245224294 and 685245224303.

It is not an unprimeable number, because it can be changed into a prime (685245224341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5942554 + ... + 6056767.

It is an arithmetic number, because the mean of its divisors is an integer number (171314320194).

Almost surely, 2^685245224347 is an apocalyptic number.

685245224347 is a deficient number, since it is larger than the sum of its proper divisors (12056429).

685245224347 is a wasteful number, since it uses less digits than its factorization.

685245224347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12056428.

The product of its digits is 12902400, while the sum is 52.

The spelling of 685245224347 in words is "six hundred eighty-five billion, two hundred forty-five million, two hundred twenty-four thousand, three hundred forty-seven".